Important When you install this update (2919355) from Windows Update, updates 2932046, 2937592, 2938439, 2934018, and 2959977 are included in the installation.

Important This update (2919355) replaces update 2883200. You don't have to install update 2883200 after you install this update.

Summary

This article describes the Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update that is dated April 2014. It also addresses some known issues about this update. This includes the 0x80073712 installation error. A restart is required after you install this update.

Introduction

This update is a cumulative update that includes the security updates and the non-security updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 that were released before March 2014. In addition to previous updates, it includes features such as improved Internet Explorer 11 compatibility for enterprise applications, usability improvements, extended mobile device management, and improved hardware support.

Important All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require this update to be installed. We recommend that you install this update on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer in order to receive continued future updates.

Improvements in this update

This update includes the following new features and improvements:

Enables a more familiar mouse and keyboard functionality for modern apps and controls.

The source disk is still offline when you disable the shadow copy schedule for the disk in Windows

How to obtain and install this update

Prerequisites

To apply this update, you must have the following update installed on Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2:

2919442 A servicing stack update is available for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2: March 2014

Method 1: Windows Update

This update rollup is provided as an important update from Windows Update. If you turn on automatic updating, this update is automatically installed.

Note

The MSDN and VLSC updated ISOs do not contain the complete set of fixes that are offered from Windows Update. Therefore, Windows Update and Windows Server Update Services (WSUS) will offer update 2919355 again to the computers that are deployed by using the images in these ISOs. This is expected and does not trigger the full reinstallation of the Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update, but only one smaller component of it. The rest of the update will not be downloaded or reinstalled.

Windows Update may offer this update again even when the computer already has this update installed. This is expected and intended to resolve a Windows Update client issue. Windows Update installs only package 2959977. This resolves the Windows Update clients issue instead of all the packages included in this update.

How to perform Windows Update

Open Windows Update by swiping in from the right edge of the screen (or, if you are using a mouse, point to the lower-right corner of the screen and move the mouse pointer up), tap or click Settings, tap or click Change PC settings, and then tap or click Update and recovery.

Tap or click Check now, and then wait while Windows looks for the latest updates for your computer.

If updates are found, tap or click Install updates.

Select update 2919335 under Optional, and then tap or click Install.

Note You might have to restart your computer to finish installing some updates. Save and close your files and apps before you restart so that you do not lose anything.

For more information about Windows Update, go to the following Microsoft website:

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Known issues with this update

Known issues that occur while you're installing this update

Resolution

When you install update 2919355 by using Windows Update, the installation fails with error code 0x80071a91.

If you install this update before April 15, the computer may stop scanning against Windows Server Update Services 3.0 Service Pack 2 (WSUS 3.0 SP2 or WSUS 3.2)-based servers that are configured to use HTTPS and do not have TLS 1.2 enabled.

If the issue is not resolved, or if you encounter other installation issues, see the "Troubleshoot problems installing the update" section in Install the latest Windows 8.1 update for more information.

Restart information

You must restart the computer after you apply this update.

File information

File detail information

File hash information

The following table lists the thumbprints of the certificates that are used to sign the updates (.msu). Verify the certificate thumbprint in this Microsoft Knowledge Base article against the certificate thumbprint indicated on the update that you download.